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Estrada V, Monge S, Gómez-Garre MD, Sobrino P, Masiá M, Berenguer J, Portilla J, Viladés C, Martínez E, Blanco JR. Relationship between plasma bilirubin level and oxidative stress markers in HIV-infected patients on atazanavir- vs. efavirenz-based antiretroviral therapy. HIV Med 2016; 17:653-61. [PMID: 26935006 DOI: 10.1111/hiv.12368] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2015] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Chronic oxidative stress (OS) may play a role in cardiovascular disease in HIV-infected patients, and increased bilirubin levels may have a beneficial role in counteracting OS. Atazanavir (ATV) inhibits UDP-glucuronosyl-transferase 1A1 (UGT1A1), thus increasing unconjugated bilirubin levels. We aimed to compare changes in OS markers in patients on ATV/ritonavir (ATV/r)- vs. efavirenz (EFV)-based first-line antiretroviral therapy (ART). METHODS A multicentre, prospective cohort study of HIV-infected patients who started first-line ART with either ATV/r or EFV was conducted. Lipoprotein-associated phospholipase A2 (Lp-PLA2), myeloperoxidase (MPO) and oxidized low-density lipoprotein (oxLDL) were measured for 145 patients in samples obtained at baseline and after at least 9 months of ART during which the initial regimen was maintained and the patient was virologically suppressed. The change in OS markers was modelled using multiple linear regressions adjusting for baseline values and confounders. RESULTS After adjustment for baseline variables, patients on ATV/r had a significantly greater decrease in Lp-PLA2 [estimated difference -16.3; 95% confidence interval (CI) -31.4, -1.25; P = 0.03] and a significantly smaller increase in OxLDL (estimated difference -21.8; 95% CI -38.0, -5.6; P < 0.01) relative to those on EFV, whereas changes in MPO were not significantly different (estimated difference 1.2; 95% CI -14.3, 16.7; P = 0.88). Adjusted changes in bilirubin were significantly greater for the ATV/r group than for the EFV group (estimated difference 1.33 mg/dL; 95% CI 1.03, 1.52 mg/dL; P < 0.01). Changes in bilirubin and changes in OS markers were significantly correlated. CONCLUSIONS When compared with EFV, ATV/r-based therapy was associated with lower levels of oxidative stress biomarkers, which was in part attributable to increased bilirubin levels.
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Affiliation(s)
- V Estrada
- Hospital Clínico San Carlos-IdiSSC, Universidad Complutense, Madrid, Spain
| | - S Monge
- Universidad de Alcalá de Henares, CIBERESP, Spain
| | - M D Gómez-Garre
- Hospital Clínico San Carlos-IdiSSC, Universidad Complutense, Madrid, Spain
| | - P Sobrino
- Universidad de Alcalá de Henares, CIBERESP, Spain
| | - M Masiá
- Hospital General de Elche, Elche, Spain
| | - J Berenguer
- Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - J Portilla
- Hospital General Universitario de Alicante, Alicante, Spain
| | - C Viladés
- Hospital Universitari de Tarragona Joan XXIII, Universitat Rovira i Virgili, Tarragona, Spain
| | | | - J R Blanco
- Hospital San Pedro-CIBIR, Logroño, Spain
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Hofstra LM, Sauvageot N, Albert J, Alexiev I, Garcia F, Struck D, Van de Vijver DAMC, Åsjö B, Beshkov D, Coughlan S, Descamps D, Griskevicius A, Hamouda O, Horban A, Van Kasteren M, Kolupajeva T, Kostrikis LG, Liitsola K, Linka M, Mor O, Nielsen C, Otelea D, Paraskevis D, Paredes R, Poljak M, Puchhammer-Stöckl E, Sönnerborg A, Staneková D, Stanojevic M, Van Laethem K, Zazzi M, Zidovec Lepej S, Boucher CAB, Schmit JC, Wensing AMJ, Puchhammer-Stockl E, Sarcletti M, Schmied B, Geit M, Balluch G, Vandamme AM, Vercauteren J, Derdelinckx I, Sasse A, Bogaert M, Ceunen H, De Roo A, De Wit S, Echahidi F, Fransen K, Goffard JC, Goubau P, Goudeseune E, Yombi JC, Lacor P, Liesnard C, Moutschen M, Pierard D, Rens R, Schrooten Y, Vaira D, Vandekerckhove LPR, Van den Heuvel A, Van Der Gucht B, Van Ranst M, Van Wijngaerden E, Vandercam B, Vekemans M, Verhofstede C, Clumeck N, Van Laethem K, Beshkov D, Alexiev I, Lepej SZ, Begovac J, Kostrikis L, Demetriades I, Kousiappa I, Demetriou V, Hezka J, Linka M, Maly M, Machala L, Nielsen C, Jørgensen LB, Gerstoft J, Mathiesen L, Pedersen C, Nielsen H, Laursen A, Kvinesdal B, Liitsola K, Ristola M, Suni J, Sutinen J, Descamps D, Assoumou L, Castor G, Grude M, Flandre P, Storto A, Hamouda O, Kücherer C, Berg T, Braun P, Poggensee G, Däumer M, Eberle J, Heiken H, Kaiser R, Knechten H, Korn K, Müller H, Neifer S, Schmidt B, Walter H, Gunsenheimer-Bartmeyer B, Harrer T, Paraskevis D, Hatzakis A, Zavitsanou A, Vassilakis A, Lazanas M, Chini M, Lioni A, Sakka V, Kourkounti S, Paparizos V, Antoniadou A, Papadopoulos A, Poulakou G, Katsarolis I, Protopapas K, Chryssos G, Drimis S, Gargalianos P, Xylomenos G, Lourida G, Psichogiou M, Daikos GL, Sipsas NV, Kontos A, Gamaletsou MN, Koratzanis G, Sambatakou H, Mariolis H, Skoutelis A, Papastamopoulos V, Georgiou O, Panagopoulos P, Maltezos E, Coughlan S, De Gascun C, Byrne C, Duffy M, Bergin C, Reidy D, Farrell G, Lambert J, O'Connor E, Rochford A, Low J, Coakely P, O'Dea S, Hall W, Mor O, Levi I, Chemtob D, Grossman Z, Zazzi M, de Luca A, Balotta C, Riva C, Mussini C, Caramma I, Capetti A, Colombo MC, Rossi C, Prati F, Tramuto F, Vitale F, Ciccozzi M, Angarano G, Rezza G, Kolupajeva T, Vasins O, Griskevicius A, Lipnickiene V, Schmit JC, Struck D, Sauvageot N, Hemmer R, Arendt V, Michaux C, Staub T, Sequin-Devaux C, Wensing AMJ, Boucher CAB, van de Vijver DAMC, van Kessel A, van Bentum PHM, Brinkman K, Connell BJ, van der Ende ME, Hoepelman IM, van Kasteren M, Kuipers M, Langebeek N, Richter C, Santegoets RMWJ, Schrijnders-Gudde L, Schuurman R, van de Ven BJM, Åsjö B, Kran AMB, Ormaasen V, Aavitsland P, Horban A, Stanczak JJ, Stanczak GP, Firlag-Burkacka E, Wiercinska-Drapalo A, Jablonowska E, Maolepsza E, Leszczyszyn-Pynka M, Szata W, Camacho R, Palma C, Borges F, Paixão T, Duque V, Araújo F, Otelea D, Paraschiv S, Tudor AM, Cernat R, Chiriac C, Dumitrescu F, Prisecariu LJ, Stanojevic M, Jevtovic D, Salemovic D, Stanekova D, Habekova M, Chabadová Z, Drobkova T, Bukovinova P, Shunnar A, Truska P, Poljak M, Lunar M, Babic D, Tomazic J, Vidmar L, Vovko T, Karner P, Garcia F, Paredes R, Monge S, Moreno S, Del Amo J, Asensi V, Sirvent JL, de Mendoza C, Delgado R, Gutiérrez F, Berenguer J, Garcia-Bujalance S, Stella N, de Los Santos I, Blanco JR, Dalmau D, Rivero M, Segura F, Elías MJP, Alvarez M, Chueca N, Rodríguez-Martín C, Vidal C, Palomares JC, Viciana I, Viciana P, Cordoba J, Aguilera A, Domingo P, Galindo MJ, Miralles C, Del Pozo MA, Ribera E, Iribarren JA, Ruiz L, de la Torre J, Vidal F, Clotet B, Albert J, Heidarian A, Aperia-Peipke K, Axelsson M, Mild M, Karlsson A, Sönnerborg A, Thalme A, Navér L, Bratt G, Karlsson A, Blaxhult A, Gisslén M, Svennerholm B, Bergbrant I, Björkman P, Säll C, Mellgren Å, Lindholm A, Kuylenstierna N, Montelius R, Azimi F, Johansson B, Carlsson M, Johansson E, Ljungberg B, Ekvall H, Strand A, Mäkitalo S, Öberg S, Holmblad P, Höfer M, Holmberg H, Josefson P, Ryding U. Transmission of HIV Drug Resistance and the Predicted Effect on Current First-line Regimens in Europe. Clin Infect Dis 2015; 62:655-663. [PMID: 26620652 PMCID: PMC4741360 DOI: 10.1093/cid/civ963] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 11/06/2015] [Indexed: 11/13/2022] Open
Abstract
Transmitted human immunodeficiency virus drug resistance in Europe is stable at around 8%. The impact of baseline mutation patterns on susceptibility to antiretroviral drugs should be addressed using clinical guidelines. The impact on baseline susceptibility is largest for nonnucleoside reverse transcriptase inhibitors. Background. Numerous studies have shown that baseline drug resistance patterns may influence the outcome of antiretroviral therapy. Therefore, guidelines recommend drug resistance testing to guide the choice of initial regimen. In addition to optimizing individual patient management, these baseline resistance data enable transmitted drug resistance (TDR) to be surveyed for public health purposes. The SPREAD program systematically collects data to gain insight into TDR occurring in Europe since 2001. Methods. Demographic, clinical, and virological data from 4140 antiretroviral-naive human immunodeficiency virus (HIV)–infected individuals from 26 countries who were newly diagnosed between 2008 and 2010 were analyzed. Evidence of TDR was defined using the WHO list for surveillance of drug resistance mutations. Prevalence of TDR was assessed over time by comparing the results to SPREAD data from 2002 to 2007. Baseline susceptibility to antiretroviral drugs was predicted using the Stanford HIVdb program version 7.0. Results. The overall prevalence of TDR did not change significantly over time and was 8.3% (95% confidence interval, 7.2%–9.5%) in 2008–2010. The most frequent indicators of TDR were nucleoside reverse transcriptase inhibitor (NRTI) mutations (4.5%), followed by nonnucleoside reverse transcriptase inhibitor (NNRTI) mutations (2.9%) and protease inhibitor mutations (2.0%). Baseline mutations were most predictive of reduced susceptibility to initial NNRTI-based regimens: 4.5% and 6.5% of patient isolates were predicted to have resistance to regimens containing efavirenz or rilpivirine, respectively, independent of current NRTI backbones. Conclusions. Although TDR was highest for NRTIs, the impact of baseline drug resistance patterns on susceptibility was largest for NNRTIs. The prevalence of TDR assessed by epidemiological surveys does not clearly indicate to what degree susceptibility to different drug classes is affected.
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Affiliation(s)
- L Marije Hofstra
- Luxembourg Institute of Health, Luxembourg.,Department of Virology, University Medical Center Utrecht, The Netherlands
| | | | - Jan Albert
- Karolinska Institute, Solna.,Karolinska University Hospital, Stockholm, Sweden
| | - Ivailo Alexiev
- National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Federico Garcia
- Complejo Hospitalario Universitario de Granada, Instituto de Investigación IBS Granada; on behalf of Cohorte de Adultos de la Red de Investigación en SIDA, Spain
| | | | | | | | - Danail Beshkov
- National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | | | - Diane Descamps
- AP-HP Groupe hospitalier Bichat-Claude Bernard, IAME INSERM UMR 1137, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | | | | | | | | | | | | | - Kirsi Liitsola
- Department of Infectious Diseases, National Institute for Health and Welfare, Helsinki, Finland
| | - Marek Linka
- National Reference Laboratory for HIV/AIDS, National Institute of Public Health, Prague, Czech Republic
| | - Orna Mor
- National HIV Reference Laboratory, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | | | - Dan Otelea
- National Institute for Infectious Diseases "Prof. dr. Matei Bals", Bucharest, Romania
| | | | | | - Mario Poljak
- Faculty of Medicine, Slovenian HIV/AIDS Reference Centre, University of Ljubljana, Slovenia
| | | | - Anders Sönnerborg
- Karolinska Institute, Solna.,Karolinska University Hospital, Stockholm, Sweden
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Serrano-Villar S, Sobrino-Vegas P, Monge S, Dronda F, Hernando A, Montero M, Viciana P, Clotet B, Pineda JA, Del Amo J, Moreno S. Decreasing prevalence of HCV coinfection in all risk groups for HIV infection between 2004 and 2011 in Spain. J Viral Hepat 2015; 22:496-503. [PMID: 25363502 DOI: 10.1111/jvh.12353] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 09/18/2014] [Indexed: 01/17/2023]
Abstract
While hepatitis C virus (HCV) infection seems to be expanding among HIV-infected men who have sex with men (MSM), the rate of coinfection in intravenous drug users (IDU) is assumed to remain constant. We evaluated the serial prevalence of HIV/HCV coinfection across all risk groups for HIV infection in Spain. We used data from 7045 subjects included in the multicentre, prospective Spanish Cohort of Adult HIV-infected Patients (CoRIS) between 2004 and 2011. We analysed risk factors for HIV/HCV coinfection by logistic regression analyses. The prevalence of HIV/HCV coinfection decreased from 25.3% (95% CI, 23.1-27.5) in 2004-2005 to 8.2% (95% CI, 6.9-9.5) in 2010-2011. This trend was consistently observed from 2004 to 2011 among all risk groups: IDU, 92.4% to 81.4%; MSM, 4.7% to 2.6%; heterosexual men, 13.0-8.9%; and heterosexual women, 14.5-4.0% (all P < 0.05). Strongest risk factors for HIV/HCV coinfection were IDU (OR, 54.9; 95% CI, 39.4-76.4), birth decade 1961-1970 (OR, 2.1; 95% CI, 1.1-3.7) and low educational level (OR, 2.4; 95% CI, 1.6-3.5). Hence, the prevalence of HIV/HCV coinfection decreased in Spain between 2004 and 2011. This decline was observed across all risk groups and is likely to be explained by a declining burden of HCV in the general population.
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Affiliation(s)
- S Serrano-Villar
- Department of Infectious Diseases, Hospital Universitario Ramón y Cajal and IRYCIS, Madrid, Spain
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Monge S, Diez M, Pulido F, Iribarren JA, Campins AA, Arazo P, Montero M, Miro JM, Moreno S, Del Amo J. Tuberculosis in a cohort of HIV-positive patients: epidemiology, clinical practice and treatment outcomes. Int J Tuberc Lung Dis 2015; 18:700-8. [PMID: 24903942 DOI: 10.5588/ijtld.13.0778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To describe tuberculosis (TB) incidence, risk factors, clinical presentation, disease management and outcomes in human immunodeficiency virus (HIV) infected patients from the CoRIS cohort, Spain, 2004-2010. DESIGN Open multicentre cohort of antiretroviral treatment (ART) naïve patients at entry. Incidence and risk factors were evaluated using multivariate Poisson regression. RESULTS Among 6811 patients, 271 were eligible for the study and 198 for the estimation of the incidence rate; TB incidence ranged from 12.1 to 14.1/1000 person-years. TB was associated with low education level (rate ratio [RR] 2.65, 95%CI 1.73-4.07), being sub-Saharan African (RR 3.14, 95%CI 1.81-5.45), heterosexual (RR 2.01, 95%CI 1.22-3.29) or an injecting drug user (RR 2.11, 95%CI 1.20-3.69), not undergoing ART (RR 3.33, 95%CI 2.22-4.76), CD4 <200 cells/mm(3) (RR 5.20, 95%CI 3.25-8.33) and log-viral load of 4-5 (RR 5.44, 95%CI 3.28-9.02) or >5 (RR 13.10, 95%CI 8.27-20.76). Overall, 87% were new cases and 13% were previously treated cases; 175 (65%) were bacteriologically confirmed. Drug susceptibility testing was performed in 146 (83%) patients: resistance to first-line drugs was 11.1% in new and 36.4% in previously treated cases. Standard anti-tuberculosis treatment with four or three drugs was prescribed in respectively 55% and 36% of cases. Treatment default was 11%, and was higher among previously treated cases; 80% received ART during anti-tuberculosis treatment, 80% of new and 50% of previously treated cases were cured or completed treatment, and 18 (6.6%) died. CONCLUSION TB incidence in HIV-infected patients remains high. Interventions should include early HIV diagnosis and access to ART, enhanced bacteriological confirmation, wider use of four-drug regimens and reduction in treatment default.
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Affiliation(s)
- S Monge
- Red de Investigación en Sida, Centro Nacional de Epidemiología, CIBER de Epidemiología y Salud Pública (CIBERESP), Spain
| | - M Diez
- Aacute;rea de Vigilancia Epidemiológica del VIH/SIDA y Comportamientos de Riesgo, Plan Nacional sobre el SIDA, Ministerio de Sanidad, Servicios Sociales e Igualdad/Centro Nacional de Epidemiología, Instituto de Salud Carlos III and CIBERESP Madrid, Spain
| | - F Pulido
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | - J A Iribarren
- Hospital Universitario de Donostia, San Sebastián, Spain
| | - A A Campins
- Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - P Arazo
- Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - M Montero
- El Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - J M Miro
- Hospital Clinic Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - S Moreno
- Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - J Del Amo
- Red de Investigación en Sida, Centro Nacional de Epidemiología, CIBER de Epidemiología y Salud Pública (CIBERESP), Spain
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Monge S, Díez M, Alvarez M, Guillot V, Iribarren JA, Palacios R, Delgado R, Jaén A, Blanco JR, Domingo P, Portilla J, Pérez Elías MJ, Garcia F. Use of cohort data to estimate national prevalence of transmitted drug resistance to antiretroviral drugs in Spain (2007-2012). Clin Microbiol Infect 2014; 21:105.e1-5. [PMID: 25636937 DOI: 10.1016/j.cmi.2014.08.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/01/2014] [Accepted: 08/02/2014] [Indexed: 10/24/2022]
Abstract
Prevalence of transmitted drug resistance (pTDR) to antiretroviral drugs in Spain (2007-2012) was estimated using the CoRIS cohort, adjusting its territorial distribution and transmission route to the reference population from the Spanish Information System on New human immunodeficiency virus diagnoses. A total of 2702 patients from ten autonomous communities and with naive FASTA sequence within 6 months of human immunodeficiency virus diagnosis were selected. Weighted pTDR, estimated using the inverse probability of selection in the sample by autonomous communities and transmission group, was 8.12% (95% CI 6.44-9.80), not significantly different from unweighted pTDR. We illustrate how proportional weighting can maximize representativeness of cohort-based data, and its value to monitor pTDR at country level.
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Affiliation(s)
- S Monge
- Red de Investigación en Sida, Centro Nacional de Epidemiología, Instituto de Salud Carlos III, CIBERESP, Madrid, Spain.
| | - M Díez
- Área de Vigilancia Epidemiológica del VIH/sida y Comportamientos de Riesgo, Plan Nacional sobre el Sida, Ministerio de Sanidad, Servicios Sociales e Igualdad/Centro Nacional de Epidemiología, Instituto de Salud Carlos III, CIBERESP, Madrid, Spain
| | - M Alvarez
- Instituto de Investigación Biosanitaria ibs GRANADA, Hospitales Universitarios de Granada, Spain
| | - V Guillot
- Instituto de Investigación Biosanitaria ibs GRANADA, Hospitales Universitarios de Granada, Spain
| | - J A Iribarren
- Hospital Universitario Donostia, San Sebastián, Spain
| | - R Palacios
- Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - R Delgado
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | - A Jaén
- Hospital Universitario Mutua de Terrassa, Barcelona, Spain
| | - J R Blanco
- Hospital San Pedro-CIBIR, Logroño, Spain
| | - P Domingo
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - J Portilla
- Hospital General Universitario de Alicante, Alicante, Spain
| | | | - F Garcia
- Instituto de Investigación Biosanitaria ibs GRANADA, Hospitales Universitarios de Granada, Spain
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Alvarez M, Monge S, Chueca N, Guillot V, Viciana P, Anta L, Rodriguez C, Gomez-Sirvent JL, Navarro G, de los Santos I, Moreno S, García F. Transmitted drug resistance to rilpivirine in newly diagnosed antiretroviral naive adults. Clin Microbiol Infect 2014; 21:104.e1-5. [PMID: 25636936 DOI: 10.1016/j.cmi.2014.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 06/01/2014] [Accepted: 08/04/2014] [Indexed: 11/20/2022]
Abstract
We characterized transmitted drug resistance to rilpivirine and the predicted efficacy of first-line rilpivirine-containing regimens in antiretroviral-naive Spanish patients. International Antiviral Society-USA mutations were detected in 138 of 2781 patients (4.9%), E138A (3.4%) being the most prevalent. Using the Stanford Algorithm, 121 patients (4.4%) showed low-level or intermediate resistance. No differences in the predicted efficacy of first-line non-nucleoside reverse transcriptase inhibitor-based regimens were observed. As rilpivirine becomes more widely used in clinical practice, the evolution of its transmitted drug resistance will need to be monitored. In addition, the exact role of E138A singletons on rilpivirine activity as part of first-line regimens merits further evaluation.
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Affiliation(s)
- M Alvarez
- San Cecilio University Hospital, Granada, Spain
| | - S Monge
- National Centre of Epidemiology, Madrid, Spain
| | - N Chueca
- San Cecilio University Hospital, Granada, Spain
| | - V Guillot
- San Cecilio University Hospital, Granada, Spain
| | - P Viciana
- Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | - L Anta
- Hospital Carlos III, Madrid, Spain
| | | | | | - G Navarro
- Hospital Parc Taulí, Sabadell, Barcelona, Spain
| | | | - S Moreno
- Hospital Ramón y Cajal, Madrid, Spain
| | - F García
- San Cecilio University Hospital, Granada, Spain.
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Graillot A, Djenadi S, Faur C, Bouyer D, Monge S, Robin JJ. Removal of metal ions from aqueous effluents involving new thermosensitive polymeric sorbent. Water Sci Technol 2013; 67:1181-1187. [PMID: 23508140 DOI: 10.2166/wst.2013.671] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, new thermosensitive copolymers bearing phosphonated groups were synthesized and used to remove metal pollution. Sorption properties are brought by hydrolyzed (dimethoxyphosphoryl)methyl 2-methylacrylate (hMAPC1) monomer. N-n-propylacrylamide (NnPAAm) led to the thermoresponsive properties of the copolymers. Low lower critical solution temperature (LCST) values were observed, ranging between 20 and 25 °C depending on the molar ratio of each monomer in the copolymer. Sorption properties of these copolymers towards nickel ions were evaluated for increasing temperatures (10-40 °C), Ni ion concentrations of 20 mg L(-1) and pH values between 3 and 7. Best results were observed for temperatures just lower than the LCST (20 °C), when the copolymer was fully soluble in water solution. For temperature higher than the LCST, phosphonic diacid groups accessibility was considerably reduced by the precipitation of the thermosensitive part of the copolymer leading to lower sorption properties. In these conditions, the highest Ni removal by the copolymer was observed for pH = 7, when there was almost no competition between the sorption of H(+) and Ni(2+) ions on the phosphonic acid groups. These optimal conditions enabled removal of about 70% of the nickel in the synthetic effluent.
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Affiliation(s)
- A Graillot
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM2), Universite Montpellier 2, Place E.Bataillon, F-34095, Montpellier, France
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Monge S, Alejos B, Dronda F, Del Romero J, Iribarren JA, Pulido F, Rubio R, Miró JM, Gutierrez F, Del Amo J. Inequalities in HIV disease management and progression in migrants from Latin America and sub-Saharan Africa living in Spain. HIV Med 2012; 14:273-83. [DOI: 10.1111/hiv.12001] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2012] [Indexed: 11/29/2022]
Affiliation(s)
- S Monge
- AIDS Research Network; National Centre of Epidemiology; Carlos III Health Institute; Madrid; Spain
| | - B Alejos
- AIDS Research Network; National Centre of Epidemiology; Carlos III Health Institute; Madrid; Spain
| | - F Dronda
- Ramón y Cajal University Hospital; Madrid; Spain
| | | | | | - F Pulido
- 12 de Octubre University Hospital; Madrid; Spain
| | - R Rubio
- 12 de Octubre University Hospital; Madrid; Spain
| | - JM Miró
- Hospital Clinic - IDIBAPS; University of Barcelona; Barcelona; Spain
| | | | - J Del Amo
- AIDS Research Network; National Centre of Epidemiology; Carlos III Health Institute; Madrid; Spain
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Monge S, Guillot V, Alvarez M, Peña A, Viciana P, García-Bujalance S, Pérez Elias M, Iribarren J, Gutiérrez F, Itziar Casado M, Garcia F, CoRIS. Analysis of transmitted drug resistance in Spain in the years 2007–2010 documents a decline in mutations to the non-nucleoside drug class. Clin Microbiol Infect 2012; 18:E485-90. [DOI: 10.1111/1469-0691.12011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Monge S, Jarrin I, Perez-Hoyos S, Ferreros I, Garcia-Olalla P, Muga R, Del Romero J, Belda J, Castilla J, Bolumar F, Del Amo J. Educational level and HIV disease progression before and after the introduction of HAART: a cohort study in 989 HIV seroconverters in Spain. Sex Transm Infect 2011; 87:571-6. [DOI: 10.1136/sextrans-2011-050125] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Phan O, Jouanne C, Monge S. Un essai clinique randomisé sur la psychothérapie des adolescents dépendants au cannabis. Annales Médico-psychologiques, revue psychiatrique 2010. [DOI: 10.1016/j.amp.2009.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zoulalian V, Monge S, Zürcher S, Textor M, Robin JJ, Tosatti S. Functionalization of Titanium Oxide Surfaces by Means of Poly(alkyl-phosphonates). J Phys Chem B 2006; 110:25603-5. [PMID: 17181194 DOI: 10.1021/jp066811s] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The use of a multiple attachment sites strategy is considered in order to improve the stability of monomolecular adlayers. The hypothesis was tested in the case of PEG-ylated compounds carrying phosphonate groups, known for their affinity toward titanium oxide surfaces. As a result, a new class of co- and terpolymers were synthesized by free-radical polymerization of three different monomers: dialkyl(methacryloyloxyalkyl)phosphonates, PEG methyl ether methacrylate, and/or butyl methacrylate monomers. Adlayers were formed following a simple dip-and-rinse protocol using diluted aqueous polymer solutions and were characterized by evaluating their thicknesses with variable angle spectroscopic ellipsometry (VASE) and their elemental compositions with X-ray photoelectron spectroscopy (XPS). The same techniques were used to determine changes of the adlayer as a function of exposure to electrolytes at different pH values and to monitor nonspecific protein adsorption upon serum exposures. The results indicated that the poly(alkyl-phosphonate)-based adlayers combine multiple site attachment of phosphonic groups and presentation of PEG side chains to the aqueous environment, resulting in both improved stability over a wide pH range in comparison to the tested reference surfaces and excellent resistance to protein adsorption when exposed to full human serum.
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Affiliation(s)
- V Zoulalian
- Laboratory for Surface Science and Technology, ETH Zurich, CH-8093 Zurich, Switzerland
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Sélambarom J, Monge S, Carré F, Fruchier A, Roque JP, Pavia AA. Contribution of the anomeric effect to the solution and crystal structure of [1S,2S,6S,7s]-1,6-diaza-4,9-dioxa-2,7-dimethoxycarbonylbicyclo[4.4.1]undecane, a condensation product of L-serine methyl ester with formaldehyde. Carbohydr Res 2001; 330:43-51. [PMID: 11217961 DOI: 10.1016/s0008-6215(00)00261-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The reaction of L-serine methyl ester hydrochloride (1) with paraformaldehyde (2) in dichloromethane in the presence of triethylamine afforded a novel compound: [lS,2S,6S,7S]-1,6-diaza-4,9-dioxa-2,7-dimethoxycarbonylbicyclo[4.4.1]undecane (4) as a 2:3 adduct of 1 with 2. 1H and 13C NMR spectroscopy were unable to discriminate between two possible symmetrical structures. The latter was unambiguously proved by X-ray crystallography. The crystal structure established: (i) the existence of two identical seven-membered rings each containing a N-C-O grouping; (ii) the existence of a long C-O-C-N-C-N-C-O-C sequence in which each nitrogen belongs simultaneously to a N-C-O (oxazolidine) and to a N-C-N (aminal) motifs; (iii) the existence of a chair-like conformation for both seven-membered rings; (iv) the antiperiplanar geometry of pN-C-O and consequently the manifestation of a strong anomeric effect in both N-C-O groupings, whereas anomeric effect was virtually absent in the N-C-N sequence, as corroborated by bond distances and bond angles. Chemical shifts, coupling constants and NOE effects confirm that the conformational features of 4 are preserved in solution.
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Affiliation(s)
- J Sélambarom
- Laboratoire de Chimie Organique, Universite de Montpellier II, France
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Monge S, Sélambarom J, Carré F, Verducci J, Roque JP, Pavia AA. Anomeric effects in non-carbohydrate compounds: conformational differences between the oxazolidine rings of a cis-fused bicyclic system. Carbohydr Res 2000; 328:127-33. [PMID: 11028780 DOI: 10.1016/s0008-6215(00)00093-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Tris(hydroxymethyl)aminomethane (Tris) can react with benzaldehyde (1:2 molar ratio) to produce cis-2,8-diphenyl-5-hydroxymethyl-1-aza-3,7-dioxabicyclo[3.3.0]octa ne, the structure of which has been confirmed by nuclear magnetic resonance spectroscopy and X-ray crystallography. The crystal structure showed that both oxazolidine rings A and B are puckered in opposite directions. Ring A exists in an E3 envelope form with 0-3 noticeably down (0.65 A) the plane of the remaining atoms, whereas ring B adopts the 7E envelope conformation with the 0-7 atom displaced up from the mean reference plane by 0.70 A. Comparison of bond angles and bond distances showed that both oxazolidine rings A and B exhibit cross endo-anomeric effects resulting from electron delocalization over the bond sequence O-3-C-2-N-1-C-8-O-7.
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Affiliation(s)
- S Monge
- Laboratoire de Chimie Organique Physique, Université de Montpellier II, France
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